Sample vial



FIG. 1 is a front perspective view of a sample vial, showing our new design;

FIG. 2 is a side elevational view of the vial;

FIG. 3 is a top plan view of the vial; and,

FIG. 4 is a bottom plan view of the vial.

The broken line showing of the knurling on the cap portion is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a sample vial, as shown and described. 